Ok, so I tested with the r766, and still no luck.
Is the default game setup (specially video mode forcing) supposed to take effect when no setup for a specific game has been recorded, when setup for this game has been recorded but video forcing left to no, or as the default value of the suggested setup values when getting the specific game's settings?

Maybe I do something wrong, maybe it doesn't work with PAL consoles or games?

I for myself would be just happy If video forcing in PAL games would be by default as in SWISS: forcing progressive mode if possible then let the game set whatever frequency is set when press B, unless specified differently in the Video mode forcing option in the current game's settings.
But I'm not alone and what suits me isn't supposed to suit everybody.
Now that SWISS is more and more compatible, is there a good reason to keep the per-game video mode setting?

It's just to know: I have a card that was almost full with what I put on it, and saturated with the patches, so to save space, I can load SWISS and its settings on another card, then run the ISOs on a card that only have them and the dedicated patches.

Is the default game setup (specially video mode forcing) supposed to take effect when no setup for a specific game has been recorded, when setup for this game has been recorded but video forcing left to no, or as the default value of the suggested setup values when getting the specific game's settings?

Not sure I understand exactly what does double-strike and field rendering refers to.
480p is the double-strike mode to 480i? If so, why does a 480p setting falls back to 240p? Does that double-strike have priority over the number of lines (field rendering setting?)? Is it possible to avoid that?

Maybe it is only because I mostly use EUR games that don't have the native 480p option?